Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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For every organism that has ever lived,
a. | there is only one question to ask. | b. | many questions could be
asked. | c. | every question has already been asked. | d. | every question has already been
answered. |
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2.
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A life scientist is LEAST likely to be found working
a. | in a laboratory. | c. | in an art museum. | b. | in a hospital. | d. | at the bottom of the
ocean. |
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3.
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Which of the following is NOT one of the ways in which the work of a life
scientist is beneficial?
a. | helping to fight diseases | b. | finding out about weather
patterns | c. | studying environmental problems on Earth | d. | studying how humans
inherit the code that controls their cells |
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4.
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A hypothesis is
a. | a fact. | c. | a possible answer to a question. | b. | a type of
question. | d. | an
experiment. |
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5.
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Which of the following is a limitation of models?
a. | They help explain how something works. | b. | They help describe how something is
structured. | c. | They are different from the real things they are modeling. | d. | They are used to
make predictions. |
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6.
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Life science has few scientific laws because
a. | people don’t want them. | b. | life scientists have not done enough
experiments. | c. | living organisms are so complex. | d. | scientists need to build more
models. |
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7.
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A scientist who wants to study the possible side effects of a new medicine would
probably
a. | give each experimental group the same dose of medicine. | b. | simply ask the
subjects about the medicine’s effects. | c. | include a control group that received no
medicine. | d. | use different numbers of subjects in each treatment
group. |
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8.
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An advantage of using the International System of Units is that it
a. | is based on measurements of common body parts. | b. | includes easily
understood units of measure, such as inches. | c. | gives scientists a common way to share their
results. | d. | uses different units to measure mass and weight. |
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9.
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In a scientific experiment, a hypothesis that cannot be tested is always
considered to be
a. | incorrect. | c. | not useful. | b. | illogical. | d. | a theory. |
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10.
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Which tool has a tube with lenses, a stage, and a light?
a. | a scanning electron microscope | c. | a transmission electron
microscope | b. | a compound light microscope | d. | an MRI |
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11.
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Which units are part of the International System of Units?
a. | inches | c. | pounds | b. | milliliter | d. | degrees
Fahrenheit |
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12.
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Which is a step of the scientific methods?
a. | asking questions | c. | using technology | b. | stating a theory | d. | building a
microscope |
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13.
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Which of the following differs between groups in a controlled experiment?
a. | a test | c. | a variable | b. | a prediction | d. | a hypothesis |
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14.
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What question did the scientists who collected this data want to answer?
a. | Are there more earthworms in the soil in the spring or in the
fall? | b. | What is the effect of plowing soil on the number of earthworms? | c. | How is the size of
earthworms affected by the seasons? | d. | Does plowing soil affect how fast earthworms
grow? |
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15.
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The most likely conclusion to be drawn from the experimental results shown in
the graph is that
a. | the heart rate is never stable. | b. | only emotions affect the heart
rate. | c. | the heart rate changes only when emotions change. | d. | the heart rate
increases with rising anxiety. |
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16.
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What molecule is the major energy carrier in the cell?
a. | nucleic acid | c. | phospholipid | b. | ATP | d. | lipid |
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17.
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What type of molecule is DNA?
a. | an amino acid | c. | a lipid | b. | a protein | d. | a nucleic acid |
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18.
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Which of the following reproduce through asexual reproduction?
a. | humans | c. | fish | b. | hydra | d. | birds |
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19.
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Maintaining stable internal conditions is called
a. | shivering. | c. | homeostasis. | b. | sweating. | d. | heredity. |
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20.
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Approximately how much of the human body is water?
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21.
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What are food, water, air, and a place to live?
a. | characteristics of living things | c. | examples of living
things | b. | basic needs of most living things | d. | stimuli |
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22.
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How do people warm up their bodies when they are cold?
a. | sweat | c. | move to a shady area | b. | shiver | d. | stay still |
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23.
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What is the passing of traits from parent to offspring called?
a. | sexual reproduction | c. | heredity | b. | homeostasis | d. | DNA |
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Completion
Complete each
statement.
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Use the terms from the following list to complete the sentences below.
| model | scientific
methods | | life science | controlled experiment | | |
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24.
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A ____________________ tests only one factor at a time.
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25.
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The study of living things is ____________________.
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Use the terms from the following list to complete the sentences
below.| nucleic acids | heredity | | ATP | metabolism | | protein | asexual | | phospholipid | homeostasis | | sexual | | | |
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26.
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All of the chemical activities that an organism’s cells perform are called
____________________.
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Use the terms from the following list to complete the sentences
below.
| producer | decomposer | | asexual | consumer | | |
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27.
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A single-celled living thing reproduces through ____________________
reproduction.
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Short Answer
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28.
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How is a scientific theory different from a scientific law?
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29.
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What is the area of a compact disk case with sides measuring 14 cm and 12.5
cm?
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30.
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Give an example of a model that you use in your own life and explain how you use
it.
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31.
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What six characteristics do all living things have in common?
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Essay
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32.
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Life science students set up the following experiment. They filled four test
tubes with the same amount of water and dry yeast, a microscopic organism. They placed each test tube
in a different place. Test tube A was in the dark at 50º F. Test tube B was in the light at
60º F. Test tube C was in the dark at 70º F. Test tube D was in the light at 80º F.
Evaluate the students’ experimental setup.
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33.
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Explain how scientific knowledge can change over time.
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Problem
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Use the table below to answer the following question.
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34.
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A scientist collected the following data from an experiment on flowering plants.
Analyze the scientist’s results, and determine what conclusions could be drawn.
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